试题与答案

在培养基中,蛋白胨的作用是() A.为细菌生长提供碳源 B.为细菌生长提供氮源 C.

题型:单项选择题 A1/A2型题

题目:

在培养基中,蛋白胨的作用是()

A.为细菌生长提供碳源

B.为细菌生长提供氮源

C.确保细菌生长pH环境

D.为细菌生长提供热源

E.为细菌生长提供蛋白

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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题型:单项选择题

When college students were asked about their experiences in childhood, those who remembered their parents frequently being in pain were also those who experienced common pains, like headaches, most frequently as adults. This evidence argues that a person’s childhood observations of adults in pain can make that person more susceptible to pain as an adult.
Which of the following, if true, most seriously weakens the argument above

A.Students who most frequently remembered that they were in pain as children were no more likely than the average student to experience common pains very frequently.

B.Parents who were frequently in pain when their children were growing up often experience just as much pain after their children have grown up.

C.College students are in general less susceptible to common pains, like headaches, than are older adults.

D.Adult memories of the circumstances of childhood pain are often vivid, but adults can rarely recall the subjective experience of being in pain as a child.

E.(E) A person’s adult recollections of childhood are likely to emphasize those memories that reflect the person’s adult experiences.

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